Patent SG-11201808947X-A (SG)
Title: System and method for encryption and decryption based on quantum key distribution
Inventor: YUAN PENG
IPC: H04L29/06
Filed: 2017-04-12
Abstract: INTERNATIONAL APPLICATION PUBLISHED UNDER THE PATENT COOPERATION TREATY (PCT) (19) World Intellectual Property C.--.` Organization 03 111111111111111111111010111 01111101011111110101H11011111111110111111111110111111 International Bureau (10) International Publication Number (43) International Publication Date ......•' WO 2018/017168 A3 25 January 2018 (25.01.2018) WI P0 I P C T (51) International Patent Classification: (74) Agent: YAO, Shun; 2800 Fifth Street, Suite 110, Davis, HO4L 9/08 (2006.01) HO4L 29/06 (2006.01) California 95618 (US). (21) International Application Number: (81) Designated States (unless otherwise indicated, for every PCT/US2017/027221 kind of national protection available): AE, AG, AL, AM, (22) International Filing Date: AO, AT, AU, AZ, BA, BB, BG, BH, BN, BR, BW, BY, BZ, 12 April 2017 (12.04.2017) CA, CH, CL, CN, CO, CR, CU, CZ, DE, DJ, DK, DM, DO, DZ, EC, EE, EG, ES, FI, GB, GD, GE, GH, GM, GT, HN, (25) Filing Language: English HR, HU, ID, IL, IN, IR, IS, JP, KE, KG, KH, KN, KP, KR, (26) Publication Language: English KW, KZ, LA, LC, LK, LR, LS, LU, LY, MA, MD, ME, MG, MK, MN, MW, MX, MY, MZ, NA, NG, NI, NO, NZ, OM, (30) Priority Data: PA, PE, PG, PH, PL, PT, QA, RO, RS, RU, RW, SA, SC, 201610252306.5 21 April 2016 (21.04.2016) CN SD, SE, SG, SK, SL, SM, ST, SV, SY, TH, TJ, TM, TN, TR, 201610298847.1 06 May 2016 (06.05.2016) CN TT, TZ, UA, UG, US, UZ, VC, VN, ZA, ZM, ZW. 15/481,338 06 April 2017 (06.04.2017) US (84) Designated States (unless otherwise indicated, for every (71) Applicant: ALIBABA GROUP HOLDING LIMITED kind of regional protection available): ARIPO (BW, GH, [ /US]; Fourth Floor, One Capital Place, P. 0. Box 847, GM, KE, LR, LS, MW, MZ, NA, RW, SD, SL, ST, SZ, TZ, George Town, Grand Cayman (KY). UG, ZM, ZW), Eurasian (AM, AZ, BY, KG, KZ, RU, TJ, TM), European (AL, AT, BE, BG, CH, CY, CZ, DE, DK, (72) Inventors: YUAN, Peng; Alibaba Group Legal Depart-EE, ES, FL FR, GB, GR, HR, HU, IE, IS, IT, LT, LU, LV, — ment, 5/F, Building 3, No. 969 West Wen Yi Road, Yu MC, MK, MT, NL, NO, PL, PT, RO, RS, SE, SI, SK, SM, Hang District, Hangzhou, Zhejiang 311121 (CN). WANG, = TR), OAPI (BF, BJ, CF, CG, CI, CM, GA, GN, GQ, GW, = Zhigiang; Alibaba Group Legal Department, 5/F, Build- KM, ML, MR, NE, SN, TD, TG). ing 3, No. 969 West Wen Yi Road, Yu Hang District, Hangzhou, Zhejiang 311121 (CN). = = = (54) Title: SYSTEM = - COMPUTING DEVICE 110 = AND METHOD FOR ENCRYPTION AND DECRYPTION BASED ON QUANTUM KEY DISTRIBUTION STORAGE DEVICE 152 NETWORK 154Th 140 ENVIRONMENT ,..--- 100 (57) : One embodiment of the present invention provides a system for facilitating storage encryption and decryption. During operation, the sys- tem receives a first request to encrypt data which is to be stored on a remote device, wherein the first request indicates the data. The system updates a key based on a dynamic key refreshment protocol. The system determines a key = USER 112 = _ = = SERVE = 120 --9--o HE R --?.. 102 .17:- 58 54 8 o SERVER ooh 1307>. NM ,...., 1 .11 label for the updated key. The system encrypts the data based on the updated key, and transmits the encrypted data and the key label to the remote device, thereby facilitating secure encryption and decryption of data on the remote device. = COMM - = DATA DECRYPTION 104Th KEY PROVISION MODULE MODULE 122 132 / ENCRYPTION/ KEY DATABASE 134 KEY T DECRYPTION SYSTEM en M SYSTEM DATA ENCRYPTION MODULE 126 COMM 06--, KEY STORAGE MODULE 136 131 GC KEY POOL 127 KEY POOL 137 1-1 COMM I IN QUANTUM ENGINE 108Th QUANTUM ENGINE Il 128 138 © \... GC Il FIG. 1 0 ei C [Continued on next page] WO 2018/017168 A3 MIDEDIM000101011M11IERINIIMOINIDOHEM11011111011111111111 Published: — with international search report (Art. 21(3)) — before the expiration of the time limit for amending the claims and to be republished in the event of receipt of amendments (Rule 48.2(h)) (88) Date of publication of the international search report: 22 March 2018 (22.03.2018)